Smile if you sat out the worst offseason in recent memory. (Elsa/Getty)

Defining the winners of the 2017-18 MLB offseason is a difficult task. Free agent signings have been sparse and few blockbuster trades have reshaped the competitive landscape. There hasn’t been one team, perhaps outside the Angels, that has clearly gone from pretender to contender in the past few months.

Surely, Giancarlo Stanton and Marcell Ozuna won by getting out of Miami. Same with mid-to-upper-tier relievers who...